- Ryutaro Imai (Baku Yorozu / Kamen Rider ZEZTZ)
- Maho Horiguchi (Nem)
- Kenta Mishima (Tetsuya Fujimi)
- Rina Onuki (Nasuka Nagumo)
- Miki Yagi (Minami Yorozu)
- Yuki Furukawa (NOX)
- Jay Kabira (Zero (voice))
- Koichi Yamadera (ZEZTZ Driver (voice))
Kamen Rider — S1E51
Episode: Stone Monster Unicornos vs. Double Rider Kick
Air Date: 1972-03-18
Runtime: 25 min
Overview
Shocker infuses a unicorn brought back from a fossil with the blood of a fiendish man, creating the monster Unicornus. Unicornus turns Goro and others into fossils.